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中国腐蚀与防护学报  1997, Vol. 17 Issue (2): 106-110    
  研究报告 本期目录 | 过刊浏览 |
用带状牺牲阳极对埋地钢管实施阴极保护时的电位和电流分布
邱枫;徐乃欣
中国科学院上海冶金研究所;上海200050;中国科学院上海冶金研究所;上海200050
POTENTIAL AND CURRENT DISTRIBUTIONS ON PIPELINES CATHODICALLY PROTECTED WITH RIBBON SACRIFICIALANODES
QIU Feng XU Naixin (Shanghai Institute of Metallurgy; Chinese Academy of Sciences)
全文: PDF(410 KB)  
摘要: 用带状牺牲阳极对埋地长输钢管实施阴极保护时,沿着轴线方向的电位分布一定是均匀的。本文通过有限元法计算,进一步研究沿着管道圆周上的电位和电流分布的规律。结果表明,在研究的参数范围以内,沿着管道圆周的电位分布也是相当均匀的。土壤电阻率越低,电位极化值越大,但所需的保护电流也增大。防护性能好的涂层总是有利于阴极保护。阳极距离和管道外径对电位和电流分布没有什么影响。这些结果可以供工程上参考,同时说明用带状牺牲阳极对埋地长输钢管实施阴极保护是十分理想的。
关键词 带状牺牲阳极地下管道阴极保护电位分布有限元法    
Abstract:Buried steel pipeline could be protected by extruded ribbon sacrificial anodes instead of traditional cast ingot anodes. Since the continuous ribbon anodes are installed in trenches parallel to the pipeline, the potential distribution in axial direction is certainly uniform. In this study, the finite element method has been applied to calculate the potential distribution and current distribution along circular periphery of the pipe. A variety of factors that may influence these distributions have been examined. In general, these distributions are also considerably uniform. The lower the soil resistivity, the larger the cathodic polarization as well as the current required for protection. Protective coating is always favorable to cathodic protection. Piples of various diameters and with various distance between pipe and anode do not show significant differences. These results may be of some help to engineering. It is also indicated that the ribbon anodes are really ideal for cathodic protection of buried pipelines.
Key wordsRibbon sacrificial anode    Cathodic protection of underground pipeline    Potential distribution    Finite element method
收稿日期: 1997-04-25     
基金资助:腐蚀与防护国家重点实验室资助项目

引用本文:

邱枫;徐乃欣. 用带状牺牲阳极对埋地钢管实施阴极保护时的电位和电流分布[J]. 中国腐蚀与防护学报, 1997, 17(2): 106-110.
. POTENTIAL AND CURRENT DISTRIBUTIONS ON PIPELINES CATHODICALLY PROTECTED WITH RIBBON SACRIFICIALANODES. J Chin Soc Corr Pro, 1997, 17(2): 106-110.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y1997/V17/I2/106

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